AP2041B/AP2043B comparison with a grating
based OSA :
This is a direct comparison between the two different
Optical Spectrum Analyzer types measuring a
1.25GHz modulated signal.
The AP2041B/AP2043B clearly shows approx. 62
times more detail than the grating based OSA and
leaves any kind of guess work behind.

Total measured span
Zoom function :
This is a 10Gb/s modulated signal (PRBS 27-1)
Zoom area measured with the AP2041B/AP2043B.
By utilizing the AP2041B/AP2043B's built-in zoom
Zoomed-in screen
function, all frequencies generated by the modulation
can be made visible and used for analysis.
While the top trace shows the complete span, the
larger bottom trace represents the "zoomed-in" area.
The Zoom function can easily be activiated by
drawing a rectangle at a specific area on the touch
sensitive screen and can be repeated multiple times
until the desired details become available.

(C/D)WDM applications:
This is an AP2041B/AP2043B measurement of a
100GHz spaced WDM system carrying modulated
and unmodulated signals.
Thanks to the ultra high resolution of the
Unmodulated channel
AP2041B/AP2043B, channel and even modulation
10Gb/s PRBS modulated types can easily be identified; in this particular case
channel
the 10Gb/s NRZ modulated signal is clearly
recognized.
In D-WDM systems low channel crosstalk is crucial
for optimum system performance and can easily be
analyzed due to the AP2041B/AP2043B's 0.16pm
wavelength resolution, and adjusting channels in the
ITU grid is no longer a challenge thanks to the
+/-3pm absolute wavelength accuracy of the
AP2041B/AP2043B.

DFB relaxation oscillation :
AP2041B/AP2043B is the perfect tool for active
Lines and markers panel
device spectrum measurement.
In this example, a DFB laser is measured and the
relaxation oscillation resonance can be analyzed
giving information on the maximum direct modulation
capability of the laser.
Horizontal and vertical lines can be used to measure
this parameter. Lines can be moved directly by
pointing on the screen or by using a mouse. Lines
and marker value are displayed on the top of the
screen.

Laser spectrum widening :
In this example the same laser have been measured
before and after transmission thrue different optical
components. The widening of the spectrum can be
seen and measured.
The built-in linewidth analysis function can be use to
easily characterize the linewidth of the signal under
test.

SMSRanalysis
Side Mode Suppression Ratio of tunable lasers :
Tunable lasers source (TLS) are commonly used in
WDM systems but cavity modes generating
sidebands close to the main peak can have an
influence on system performance (when TLS is
modulated).
With AP2041B/AP2043B sidebands can be
measured easily with the built-in SMSR function.

Specifications are subject to change without notice.
September 2008
AP2041B/AP2043B Optical Spectrum Analyzer